<template>
    <div class="swiper-container" ref="Swiper">
        <div class="swiper-wrapper">
            <div class="swiper-slide" v-for="(item, index) in skuImageList" :key="item.id" @click="changeImg(index)">
                <img :src="item.imgUrl" />
            </div>
        </div>
        <div class="swiper-button-next"></div>
        <div class="swiper-button-prev"></div>
    </div>
</template>

<script>
import Swiper from "swiper";
import { mapGetters } from "vuex";

export default {
    name: "ImageList",
    computed: {
        ...mapGetters("details", ["skuImageList"]),
    },
    methods: {
        // 图片切换
        changeImg(index) {
            this.$bus.$emit("changeImg", index);
        },
    },
    watch: {
        skuImageList: {
            immediate: true,
            handler() {
                // 初始化swiper
                this.$nextTick(() => {
                    new Swiper(this.$refs.Swiper, {
                        // 如果需要前进后退按钮
                        navigation: {
                            nextEl: ".swiper-button-next",
                            prevEl: ".swiper-button-prev",
                        },
                        //
                        slidesPerView: 3, // 显示几个
                        slidesPerGroup: 3, // 每次滑动几个
                    });
                });
            },
        },
    },
};
</script>

<style lang="less" scoped>
.swiper-container {
    height: 56px;
    width: 412px;
    box-sizing: border-box;
    padding: 0 12px;

    .swiper-slide {
        width: 56px;
        height: 56px;
        float: left;

        img {
            width: 100%;
            height: 100%;
            border: 1px solid #ccc;
            padding: 2px;
            width: 50px;
            height: 50px;
            display: block;

            &.active {
                border: 2px solid #f60;
                padding: 1px;
            }

            &:hover {
                border: 2px solid #f60;
                padding: 1px;
            }
        }
    }

    .swiper-button-next {
        left: auto;
        right: 0;
    }

    .swiper-button-prev {
        left: 0;
        right: auto;
    }

    .swiper-button-next,
    .swiper-button-prev {
        box-sizing: border-box;
        width: 12px;
        height: 56px;
        background: rgb(235, 235, 235);
        border: 1px solid rgb(204, 204, 204);
        top: 0;
        margin-top: 0;

        &::after {
            font-size: 12px;
        }
    }
}
</style>
